Closure for paper containers



` Nov. 21,1944'.

FQJ. oBRlEN CLOSURE FOR PAPER CONTAINERS Filed Oct. 18, 1945 tight seal.

Patented Nov. 21, 1944 A 2,363,352 oLosUaE Fon PAPER CONTAINERS l Frank OBrien, Pelham,

tinental:Can Company, Inc., corporation of- New York N. Y., assignor to Con- New York, N. Y., a

, i Application October 178, 1943,'Seral No. 506,741

6 claims. (c1. .22o- 5.5)`

The inventionrelates generally to containers formed wholly of paper, or comprising a body of y paperfand metallic end closures, and it primarily seeks to provide a novel closure which isfsimple in structure and'facilit'ates manufacture of the con;

tainers atminimum' expense, and yet is Yquite efficient and. assures the provision of va liquid In its more detailed nature, the invention seeks to` provide in' acontainehr'of the character stated a closure havinga heel and a surrounding skirt portion cooperating 'with the heel in providingfa container body vend receiving channel, means "for spacing the lower Cportion of` the heel, inwardly from the' adjacent body portion to provide a scali ing compound receiving groove, and sealing compound in said groove.r v ri o An object of the invention is torprovidefa conn tainer structure ,of the character stated in which the end of the container body is folded inwardly or bent over inwardly upon itself so as to form a spacer ring less than the depth of the heel and resulting inthe provision of the sealing compound receiving groove between the main body of the `containerand the lower portion of said heel.l

' approved manner.

view'illustrating a container structure embodying the invention. y

Figure '2 is an enlargedffragmentary cross sectional view illustrating a portion of one end closure as illustrated in Figure 1. f Figure 3 is a'view similar to Figure aand illustrates the end Yclosure minusthe step oi outwardly flaring the endclosure to form a locking shoulder. n f

Figure 4 is a viewsimilar-to Figure 3 illustrating a slightly modified form of the invention. I Figure 5 is a View similar to Figure 4 and illustrates the end closure as flared to provide a' locking shoulder.

In the example of embodiment of the invention herein disclosed thev body of the container generally designated 5 is formed of paper in any The end closures generally designated 6 preferably are formed of metaLfbut itis to be, understood that they can be formed of Y paper so as to provide any all paper container.`

Each end closure includes a depressed central body portionr l merging in to a cylindriform neel 8 which in turnmerges intoA a horizontal, outwardly extended body or flange portion 9. In

, completing the container closure fthe flange is Another object vof the invention is to provide a container structure of the character stated in which the spacer ring which provides the sealing compound receiving groove forming spacing between the body of the container and the lower portion of the heel is a separate ring piece adhered to the interna-l surface of the body at the end thereof.

` Another object of the invention is to provide -a container` structure of the character. stated. in which the end closure heel is ilared to provide'a lock 'shoulder extending under the spacer ring and against the sealing compound in the sealing compound receiving groove. y

Another object of the invention is to provide a container structure of the character stateddn which the flared lockshoulder on the closure heel lies opposite the endextremity of the skirt portion and said end extremity is idented inthe container body stock.

With theabove and other objects in view that will hereinafter appear, the nature of the invention will be more fully understood by following the detailed. description, the appended claims and the several' views illustrated in the accompanying drawing.

In the drawing:

Figure 1 is a side elevation and part sectional space the heel from the main bent downwardly to provide a closure skirt III which is bent inwardly upon itselfy to form a hem edge II andwhich cooperates with the heel 8 in providing an annular channel for embracing the end of the container body.

The end extremity of the container body is bent or folded `inwardly upon itself as at Il to form a separator ring I2 which contacts the heel 8 and is of less depth than said heel so as to body 5 and provide a sealing compound receiving groove I3. A suit` able sealing compound I4 is deposited in the groove I3, and when'the body end 5, I2 is tightly embraced in the annular end closure channel in the manner illustrated in Figures 2 and 3, a very efcient sealing of the end of the container is effected.

During the setting of the seal by tight embracement of thecontainer body 5, I2 in the end closure channel the lower extremity or hem por tion I5 of the skirt may be indented in the body stock as indicated at I6. While the end closure can bef completed in the manner illustrated in Figure 3, if desired, it is preferred that the lower portion of the heel 8 extending below the spacer ring portion I2 be flared outwardly as illustrated in Figure 2 s o as to provide a lock shoulder I'I extending under the spacer ring I2 and against ther sealingcompound I4 in the receiving groove I3. It is also preferred that the heel 8 and the skirt III be formed of substantially the same depth so that the skirt will be indented in the body wall as at I6 directly opposite the outwardly extended lock shoulder I'I and thus provide for a more efiicient sealing of the container.

In Figures 4 and 5 of the drawing there is illustrated a slightly modified form of the invention in which there is included a separate spacer ring I8 which may be adhesively attachedto the inner surface of the body at the end thereof instead of folding the body stock inwardly upon itself inl the manner illustrated in Figures V1 -to 3.

It is of course to be understood that the details of structure and the arrangementof parts may be variously changed and modified" without departing from the spirit and scope of tion.

I claim: l

1. In a container, a body, an end closure, said closure having a heel and a surrounding skirt cooperating with said heel in providing a channel in which the end of said body is embraced, spacer the inven- `means lling a portion only of the channel and spacing the lower portion of` the heel from the adjacent body portion to form a sealing compound receiving groove, and sealing compound substantially lling said groove and directly engaging in sealing contact with the heel and the body wall portion directly opposite said heel at the position of the groove.l

2. In a container, a body, an end closure,.said closure having a heeland a surrounding skirt cooperating with said heel in providing a channel in which the end of said body is embraced, said body end being turned inwardly upon itself to form a spacer ring less in depth than the depth of the heel so as to space the lower portion of the heel from the adjacent body portion to form a sealing compound receiving groove, and sealin compound in said groove.

3. In a container, a body, an end closure, said closure having a heel and a surrounding skirt cooperating with said heel'in providing a channel in which the end of said body is embraced, a

lvfrom the adjacent body portion to form a sealing compound receiving groove, and'sealing com- "j in said groove.`

pound `in said groove, said heel being ilared to provide a lock shoulder extending under said spacing means and against the sealing compound 5. In a container, a body, an end closure, said closure having a heel and a surrounding skirt spacer ring attached to and projecting inwardly cooperating with said heel in providing a channel in which the end of said body is embraced, a spacer ring attached to and projecting inwardly from the end portion of the body and less in depth than the depth of the heel so as to space the lower portion of the heel from the adjacent body portion to form a sealing compound receiving groove, and sealing compound in said groove, said heel being flared to provide a lock shoulder extending under said ring and against the seal ing compound in said groove.

6. In a container, a body, an end closure, said closure having a heel and a surrounding skirt cooperating With said heel in providing a chan- `nel in which the end of Said body is embraced, a spacer ring attached to and projecting inwardly from the end portion of the body and less in depth than the depth of the heel so as to space the lower portion of the heel from the adjacent body portion to form asealing compound receiving groove, and sealing compound in said groove. said heel being iiared to provide a lock shoulder extending under said ring and against the sealing compound in said groove, said heel and skirt being dirnensioned so that the ared lock shoulder lies opposite the end extremity of the skirt, and said end extremity being indented in the container body stock.

FRANK J. OBRIEN. 

